http://www.nytimes.com/2015/11/01/us/four-dead-in-shootings-in-colorado-springs.html
http://www.theatlantic.com/politics/archive/2015/06/mass-shootings-are-preventable/396644/
http://www.foxnews.com/us/2015/11/01/winston-salem-state-university-on-lockdown-after-reports-gunman-shooting-on/